Yongda
Yongda
Engineered to excel in high-density multi-zone configurations, these premium hydronic manifolds, bypass shunts, and filtration systems satisfy the strict technical directives of Istanbul, Ankara, and the broader Anatolian commercial construction sectors.
High-precision brass distribution manifolds delivering optimal volumetric flow rates across multi-loop underfloor heating pipelines.
View Specifications →
Engineered for precise fluid mixing in variable load systems, protecting boiler circuits while optimizing underfloor heat delivery.
View Specifications →
Maintains consistent thermal output with high-sensitivity thermostatic heads, combating extreme temperature drops in Central Anatolia.
View Specifications →
Dual-stage filtration elements designed to intercept particulate scale, protecting delicate heat exchanger blocks from early damage.
View Specifications →Turkey occupies a unique geopolitical and climatic position. Stretching across Eastern Europe and Western Asia, its construction landscape transitions rapidly from maritime humidity along the Bosphorus to dry, continental sub-zero conditions in Eastern Anatolia. These regional climatic variations place strict demands on domestic water distribution and hydronic space-heating technologies.
In Turkish metropolitan hubs like Istanbul, Izmir, and Ankara, real estate density is expanding rapidly alongside ambitious urban renewal initiatives. Modern residential complexes and retrofitted high-rise systems must conform to TS 825 thermal insulation and energy efficiency standards. Consequently, traditional, uncontrolled direct-loop radiator configurations are being superseded by hydronic underfloor zoning systems, requiring precision brass manifolds, dynamic balancing valves, and auto air release infrastructure.
Moreover, local mechanical contractors face specific pipeline challenges. Water pressure volatility in regional municipal grids, combined with mineral-rich sediment profiles, can trigger premature scaling and localized cavitation in system control components. Deploying premium, corrosion-resistant brass elements, reinforced bypass assemblies, and dual-mesh filtration systems is critical to prevent system degradation and expensive site maintenance.
Across North America, Europe, and the Middle East, the HVAC sector is undergoing a profound paradigm shift. Driven by climate action goals (such as the EU's Net Zero Target and regional energy efficiency certifications like LEED and BREEAM), building systems are moving away from fossil-fueled direct combustion towards low-temperature air-to-water heat pumps and smart district heating loops.
Low-temperature space heating systems depend entirely on hydraulic balancing and clean heat exchange circuits. Because water is circulated at lower supply temperatures (typically between 35°C to 45°C rather than standard 75°C boiler outputs), even minor flow imbalances or micro-bubbles can severely degrade thermal transfer capacity. This has elevated the status of distribution manifolds from basic plumbing headers to active, dynamically balanced flow distributors.
Our formulations prioritize dezincification-resistant (DZR) materials, ensuring structural integrity even when exposed to soft, corrosive waters or regional chemical treatment additives.
Differential pressure bypass valves match localized fluid displacement with pump performance curves, protecting piping systems from noise and overpressure.
Integrating automatic, high-capacity brass air vents removes dissolved gases, preventing oxygen-induced pump erosion and heat transfer losses.
Ensuring stable hydronic flow, high pressure tolerance, and zero-leakage security in heavy-duty commercial installations.
For boiler loops, underfloor setups, and heat pump loops, we engineer high-reliability terminal protection components. For example, our Y9021 Water Filter captures up to 98% of particulate pipeline matter, preventing debris from eroding zone actuators. Meanwhile, our Y5001/Y5002 Boiler Angel Valves control hydronic distribution directly at the boiler connection point, using hard-sealed spherical spools designed to handle scaling and high delta-T loads.
To manage dissolved air, the Y9070 Venting Valve operates continuously, venting air pockets that would otherwise lead to noise, uneven heating, and component corrosion.
Filters 98% of piping impurities.
Spherical spool control for boiler connections.
Removes air to protect heat source units.
Maintains balanced water mixing.
Established in 1996 in Yuhuan, Zhejiang—widely recognized as the "valve capital of China"—Yuhuan Yongda Fluid Control Co., Ltd. (previously Yuhuan Yongda Plumbing Co., Ltd.) has grown into an international developer of HVAC control equipment. We operate a facility spanning over 45,000 square meters, with an operational footprint of 80,000 square meters.
Our facility houses over 600 advanced production and testing setups, including 80+ specialized multi-axis CNC machines. This precision machinery allows us to deliver tight tolerance fits and consistent batch performance across brass manifolds, valves, and water accessories. We manufacture mid-to-high-grade components with a focus on lead-free compliance and environmental safety, serving customers in North America, Europe, and dynamic markets like Turkey.
Under our brand, Cokaren, we provide high-performance fluid control products with the promise: "keep flowing, keep warming". Our design team focuses on aesthetics, corrosion resistance, and high performance, helping engineering projects across Europe and Turkey operate reliably.
To support global supply chains, our factory operates under a triple-certified framework:
Every valve undergoes automated sealing checks (pneumatic and hydrostatic) to ensure leak-free performance under variable municipal pressures.
Technical benchmarks for Yuhuan Yongda HVAC brass lines compared with European norms.
| Parameter / Feature | Yuhuan Yongda (Cokaren Standard) | TS 825 / EU Standards Compliance | Turkish Project Advantages |
|---|---|---|---|
| Primary Forged Brass | CW617N / CW602N (DZR options available) | EN 12165 / EN 12164 compatible | Resists dezincification and cracking in mineral-rich municipal supplies. |
| Maximum Operating Pressure | PN 10 / PN 16 Bar (Dynamic peak tested) | DIN EN 12828 underfloor heating specs | Protects loops against sudden pressure changes in municipal lines. |
| Temperature Regulation Range | 20°C - 70°C (Precise mixing performance) | Fits modern low-temp boiler requirements | Allows high delta-T boiler lines to integrate with underfloor loops. |
| Thread Interface Options | G Thread (ISO 228-1) / NPT Thread compatible | ISO 228 standard BSP threads | Allows fast connection to Turkish fittings and valves without adapters. |
| Surface Finishing | Nickel-free plated or shot blast natural brass | RoHS 3.0 / REACH compliant | Safe for drinking water applications and prevents build-up. |
To help regional design engineers choose the right components, our technical sales team has created reference models matching local project requirements:
Designed for dry continental climates, this setup combines high-port brass manifolds (Y1001) with smart room thermostats to manage high thermal demands during cold winters.
Addresses variable marine humidity and temperature changes using automatic air release valves and smart mixing shunts to prevent condensation-related issues.
Handles high-volume heating requirements using large-bore distribution manifolds, pressure balancing shunts, and high-performance strainers to ensure continuous operation.
Our full range of brass valves, smart thermostats, automatic vents, and accessories designed for commercial and residential applications.
Ensures safe shutoff and temperature control at boiler inlets. Designed for easy integration with regional piping configurations.
View Pricing →
Offers reliable flow shutoff and temperature monitoring for multistory commercial developments.
View Details →
Integrates easily with underfloor heating systems to maintain precise room temperatures and reduce overall energy use.
View System Specs →
Designed for hot-melt PPR piping, providing high structural strength and a leak-free seal for domestic hot water lines.
Request Quotation →
Includes dual-action air discharge and water drain functions to prevent system locks in floor heating manifolds.
Technical Details →
Vents air pockets automatically to protect boiler heat exchangers from dry-firing damage.
View Tech Docs →
Allows field customization of air release rates, protecting distribution systems against pressure drops.
View Options →
Provides secure, high-pressure sealing for brass manifolds. Includes a built-in vent port for manual air bleeding.
Pricing List →As the Turkish construction sector shifts toward higher energy savings, Yuhuan Yongda's engineering team is developing integrated system controls. Our technical roadmap focuses on three main developments:
Conventional static flow control is being replaced by dynamic temperature balancing. Cokaren's upcoming balance actuators will monitor return-loop temperatures directly at the manifold, adjusting individual loop flows dynamically to maintain optimized room temperatures. This eliminates flow imbalances in long loop circuits.
To prepare for upcoming environmental regulations in the EU and Turkey, Yuhuan Yongda is expanding its lead-free brass product lines. By using copper-silicon and copper-bismuth alloys, our valves achieve high corrosion resistance and tensile strength while keeping lead levels below 0.1% to satisfy strict drinking water laws.
Answers to technical and engineering questions about installing and maintaining radiant heating systems in Turkey.
Turkish municipal water can vary significantly in mineral content and hardness, especially between coastal areas like Izmir and inland locations like Central Anatolia. Hard water accelerates mineral scaling, while soft water can lead to dezincification in standard brass components. Yuhuan Yongda utilizes CW617N and DZR brass alloys, which maintain stable mechanical properties and resist crack corrosion in these operating environments.
District heating networks suffer from pressure fluctuations and temperature changes, which dissolve air into the heating water. When the water pressure drops or temperatures rise, this dissolved air forms micro-bubbles that cause air locks, radiator noise, and pump oxidation. Automatic air release valves vent these bubbles continuously, keeping heat transfer efficient and protecting system pumps.
Underfloor heating loops require lower operating temperatures (under 50°C) to protect floor coverings and PEX piping, whereas boilers and radiators typically operate at higher temperatures (above 75°C). Mixing shunts mix cooler return water with hot supply water, stabilizing the system temperature to ensure occupant comfort and protect system piping from thermal stress.
Yes. Leveraging our 80+ multi-axis CNC machines and dedicated CAD/CAM design facility, Yuhuan Yongda offers OEM and ODM services. We customize thread types (BSP/NPT), port configurations (from 2 up to 12 loops), flow meters, and bracket spacing to meet the specific requirements of Turkish mechanical contractors and distributors.
TS 825 sets maximum limits on heat loss in residential and commercial buildings. Radiant floor systems distribute heat uniformly across floor surfaces, achieving comfortable heating at lower overall water temperatures than radiators. This reduces fuel consumption at the boiler and helps properties meet local thermal efficiency standards.